Journal of the Society of Motion Picture Engineers (1930-1949)

Record Details:

Title:
Journal of the Society of Motion Picture Engineers
Date:
1930-1949
Publisher:
New York, N.Y. : The Society
Volume:
Journal of the Society of Motion Picture Engineers
Leaf #:
000512
Language:
English
Collection:
Technical Journals
Format:
Periodicals
Contributor:
Prelinger Library
Sponsor:
MSN
Coordinator:
Media History Digital Library
Description:
The Journal of the Society of Motion Picture Engineers (SMPE)Êdocuments the technological progress of the film industry, highlighting technical developments in production and exhibition. Of special interest are articles about special effects, theater practices, lighting, and the introduction of the 16mm format. Initially titled "Transactions of the Journal of the Society of Motion Picture Engineers."Digitized by the Prelinger Library and the Library of Congress Motion Picture, Broadcasting and Recorded Sound Division.
Date Added:
July 19, 2022
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May, 1930] STOP BATHS AND FIXING BATHS 495 The effect of varying concentrations of MQ-25 developer on the hardening properties of a stop bath containing (1) acetic acid and £ 7o CHROME ALUM 0.57. SULPHURIC X 70 r^Q. 25 • NEUTRKL F\LM F\Lf\ MELTING, PO\NTS KFTER MELTING POINTS AFTER O ^) 10 O b \0 FIG. 6. Effect of the addition of MQ-25 developer on the hardening properties of a 2 per cent chrome alum stop bath containing 5 cc. of sulfuric acid per liter. (2) sulfuric acid was therefore determined. The results are given in Figs. 4, 5, and 6. From Fig. 4 it is seen that in the fresh bath the hardening action produced with neutral film increased as the